Do you sew? Here is a great site for how-to on making your own. I've been meaning to do it, but am lazy
AskPauline.com - Free cloth menstrual pad pattern tutorial
I use a Diva cup, which I LOVE LOVE LOVE and (IMO) is a great alternative to tampons. I had to use tampons on a recent trip I took to Haiti after using a Diva for 2 years and I hated them!